re: Serious question..if your S/O did this what would your response be?

Time the frick out here.

I've read all the OP's posts and a few responses. Seems the consensus is he was up to no good and you should ditch his arse.

However, let me publish the facts again, this time with some numbered assumptions:

Your S/O, who (1) has his own job and earns money, (2) supports himself, and (3) manages his own finances, loaned money to a girl who claimed to be your friend with the expectation she would pay it back. He then asked you to contact her.

Assuming 1-3 are all true: am I missing some egregious act of betrayal here??? Perhaps the man thought he could make a little interest. Perhaps he just felt like helping someone that day. Sure it'd have been nice if he told you but is that necessary when it's his money? Maybe he thought it would be paid back without ever involving you and now he's just embarrassed. I don't know his motives, but more importantly YOU DON'T EITHER. And it would be a fricking shame to end what has been an otherwise good relationship (yes? no?) without direct asking him what his motives were.